The Cosworth Twin Plenum inlet manifold for the Nissan VQ35DE has been engineered for increased performance featuring increased plenum volume for improved high rpm power with torque enhancing velocity stacks to maintain mid range performance. With performance derived from countless hours of development including computational fluid dynamics, the Cosworth Twin Plenum Inlet manifold is perfect for both normally aspirated and forced induction applications. Performance increases will be significant on engines with improved exhaust and intake system including optimized ignition/fuel maps with increased maximum rpm limiter. Cast from lightweight aluminum alloy with carbon fiber end caps and includes all required mounting hardware.